Barbecue



FIG. 1 is a perspective view of a barbecue showing our new design;

FIG. 2 is a top plan view thereof,

FIG. 3 is a right side view thereof,

FIG. 4 is a left side view thereof,

FIG. 5 is a front elevational view thereof, and,

FIG. 6 is a rear elevational view thereof.

The broken line showing of the remainder of the barbecue is for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a barbecue, as shown and described. 